Fix C# to support Chinese tts models using jieba (#815)

.github/scripts/test-dot-net.sh

@@ -24,6 +24,7 @@ cd ../offline-decode-files
 cd ../offline-tts
 ./run-aishell3.sh
 ./run-piper.sh
+./run-hf-fanchen.sh
 ls -lh
 
 cd ../..

.github/workflows/dot-net.yaml

@@ -47,6 +47,6 @@ jobs:
         env:
           API_KEY: ${{ secrets.NUGET_API_KEY }}
         run: |
-          # API_KEY is valid until 2024.05.02
+          # API_KEY is valid until 2025.04.26
           cd /tmp/packages
           dotnet nuget push ./org.k2fsa.sherpa.onnx.*.nupkg --skip-duplicate --api-key $API_KEY --source https://api.nuget.org/v3/index.json